Metal-dielectric antennas for efficient photon collection from diamond color centers
Metal-dielectric antennas for efficient photon collection from diamond color centers
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DOI：
10.1364/oe.26.003341
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发表时间：
2018-02-05
期刊：
影响因子：
3.8
通讯作者：
Englund, Dirk
中科院分区：
文献类型：
--
作者：
Karamlou, Amir;Trusheim, Matthew E.;Englund, Dirk
基于类原子缺陷的量子技术的一个核心挑战是有效收集发射体的荧光。光学天线是有吸引力的，因为它们提供定向发射以及跨越宽发射器频谱的自发发射率增强。在这项工作中，我们介绍和优化金属介电纳米天线的设计嵌入到金刚石基板和量子发射器对齐。我们分析了外部量子效率，收集效率，辐射珀塞尔因子，和整体收集光子率之间的权衡。该分析表明，与裸发射极相比，优化的金属-电介质混合结构可以将从氮空位中心收集的光子速率提高两个数量级以上。(C)根据OSA开放获取出版协议的条款，2018年美国光学学会
A central challenge in quantum technologies based on atom-like defects is the efficient collection of the emitter's fluorescence. Optical antennas are appealing as they offer directional emission together with spontaneous emission rate enhancement across a broad emitter spectrum. In this work, we introduce and optimize metal-dielectric nanoantenna designs recessed into a diamond substrate and aligned with quantum emitters. We analyze tradeoffs between external quantum efficiency, collection efficiency, radiative Purcell factor, and overall collected photon rate. This analysis shows that an optimized metal-dielectric hybrid structure can increase the collected photon rate from a nitrogen vacancy center by over two orders of magnitude compared to a bare emitter. (C) 2018 Optical Society of America under the terms of the OSA Open Access Publishing Agreement